Figure 1.

Schematic view of a supercapacitor. Porous carbon materials with disordered structures are used as the electrodes, and the cell is soaked with an electrolyte that may be organic, aqueous or ionic liquid-based, with some typical electrolytes shown. Note, for simplicity the separator (which prevents short circuit), the binder that holds the electrode materials together and the current collectors are not shown. Schematic porous carbon structure adapted from ref (17) with permission from Springer.